Question

I have a Windows Form with dgv. For now it’s just for presentational purposes so I use dummy data to populate one row with data. I also have a button named Add New Row which for just have to add new empty row in the dataGridView every time it’s clicked. For the initial populating of the dgv I use the load event of the form like this :

private void Form1_Load(object sender, EventArgs e)
{
    dataGridView1.AutoGenerateColumns = false;

    MyData td13 = new MyData();

    td13.colorCombinationColumn = "aff";

    td13.remarksColumn = "abcdddd";

    td13.prodColumn = true;

    td13.LastModifiedColumn = "ab";

    td13.ByColumn = "abc";

    MyData[] arr = new MyData[2];
    arr[0] = td13;

    dataGridView1.DataSource = arr;

}

Where MyData is this class :

public class MyData
{
    private int mId;

    private string mCombination;

    private string mremarks;

    private bool mprod;

    private string mLastModified;

    private string mBefore;


    public int Id
    {
        get
        {
            return mId;
        }

        set
        {
            ...

So far so good, but then I add my button and handle his click event:

private void btnAddRow_Click(object sender, EventArgs e)
{
    SoleData[] arr = new SoleData[1];
    dataGridView1.DataSource = arr;
}

And here is where the things go wrong. If I just dataGridView1.Rows.Add(1); is says Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound.. As you see I tried some other approaches but so far no success.

Answer 1

Try to use a BindingList<MyData> instead of the MyData[] arr.
Any modifications you do to the list will be reflected in the DGV, no further code necessary.
(Also, declare the list as a private field of the form.)